NumberResearchRecent thousands-block assignments
25 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 858
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-03-10 | 858-340-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-03-10 | 858-340-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-03-10 | 858-340-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-03-10 | 858-340-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-03-10 | 858-340-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-03-10 | 858-340-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-03-10 | 858-340-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-03-10 | 858-340-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2023-02-17 | 858-363-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | JACUMBA | CA |
| 2023-02-15 | 858-339-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | EL CAJON | CA |
| 2023-02-15 | 858-351-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7147 | SNDG SNDG | CA |
| 2023-02-07 | 858-338-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | HARBSNALPN | CA |
| 2023-01-31 | 858-808-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2023-01-31 | 858-808-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2023-01-31 | 858-808-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2023-01-31 | 858-808-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | NATIONALCY | CA |
| 2023-01-25 | 858-327-2XXX | 2000–2999 | Assigned | NUSO, LLC | 732J | SNDG SNDG | CA |
| 2023-01-20 | 858-398-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2023-01-20 | 858-398-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2023-01-20 | 858-398-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2023-01-19 | 858-723-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LA MESA | CA |
| 2023-01-18 | 858-898-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | CORONADO | CA |
| 2023-01-11 | 858-828-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | SNDG SNDG | CA |
| 2023-01-05 | 858-339-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2023-01-05 | 858-339-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2022-12-16 | 858-462-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | NATIONALCY | CA |
| 2022-12-13 | 858-742-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | SNDG LVTA | CA |
| 2022-12-06 | 858-343-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-12-06 | 858-343-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-11-29 | 858-341-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CHULAVISTA | CA |
| 2022-11-22 | 858-363-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | JACUMBA | CA |
| 2022-11-16 | 858-339-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2022-11-16 | 858-339-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2022-11-16 | 858-339-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | EL CAJON | CA |
| 2022-11-16 | 858-363-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | JACUMBA | CA |
| 2022-11-16 | 858-644-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SNDG MRMS | CA |
| 2022-11-16 | 858-742-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | SNDG LVTA | CA |
| 2022-11-16 | 858-742-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | SNDG LVTA | CA |
| 2022-11-16 | 858-765-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | LA JOLLA | CA |
| 2022-11-16 | 858-878-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | LA MESA | CA |
| 2022-11-15 | 858-665-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
| 2022-11-15 | 858-665-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JOLLA | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.